Meta Platforms Technologies

A device of the subject technology includes a human body communication (HBC) controller and a first electrode electrically coupled to the HBC controller and arranged to contact skin of a user when the user wears the device. The device further includes a second electrode electrically coupled to the HBC controller.

An example method for managing authentication across multiple devices is described. A first device, having a first privilege level, receives a first authentication input, and in response unlocks. The first device further generates a secondary authentication credential based on the authentication input and transmits this credential to one or more secondary devices, where the one or more secondary devices each have a respective privilege level that is lower than the first privilege level, and the secondary authentication credential causes the one or more secondary devices to unlock. In some embodiments, hierarchical privileges are maintained where the first device has higher authentication privileges than the secondary devices. In some embodiments, secure authentication is implemented through cryptographic device identification, secure channels, and privilege-based access control, while enabling features like device replacement, synchronized state management, and enterprise security controls. Systems and devices configured to perform such methods are also described.

An example system includes a mute circuit that stores a mute state that is modifiable only through hardware operations. The circuit receives a mute trigger signal from a hardware source. In response to the mute trigger signal, the mute circuit atomically applies the enforced mute state to one or more sensors. In accordance with the mute trigger signal no longer being received, the mute circuit atomically clears the enforced mute state from the one or more sensors. The circuits, systems and methods described herein enable hardware-enforced sensor privacy in consumer devices, such as augmented reality devices.

A method of navigating through one or more user interface elements is described. The method includes displaying a plurality of user interface (UI) elements, obtaining data generated during performance of a first swiping motion of a thumb over an index finger, the first swiping motion having a first kinematic profile, and based on the first kinematic profile, causing movement of a focus selector at a first rate through a first set of the plurality of UI elements. The method further includes obtaining additional data generated during performance of a second swiping motion of the thumb over the index finger, the second swiping motion having a second kinematic profile different than the first kinematic profile, and based on the second kinematic profile, causing movement of the focus selector at a second rate through a second set of the plurality of UI elements.

A wearable device includes a neuromuscular sensor and a processor. The neuromuscular sensor is configured to detect a neuromuscular signal indicative of muscular contraction within a hand. The processor is configured to receive the neuromuscular signal and determine based on the neuromuscular signal that one or more fingers of the hand are performing one or more isometric contractions. The processor is also configured to determine that the one or more isometric contractions are associated with a particular input at an XR device configured to perform a particular operation in response to the particular input. Additionally, the processor is configured to, responsive to determining that the one or more isometric contractions are associated with the particular input, transmit an indication of the particular input to the XR device.

Aspects of the present disclosure relate to automatic background translation of text segments captured in a real-world environment by an artificial reality (XR) system, such as augmented reality (AR) glasses. The AR glasses can use outward-facing cameras to continuously and proactively scan the real-world environment to detect text. If the text is not in the user's base language, the system can automatically translate it into the base language in the background. Inward-facing cameras can detect the user's gaze and determine whether the user has an intent to read the text, e.g., based on a gaze dwell on the text. If the system determines that the user has the requisite intent, the system can seamlessly display the translated text to the user on the augmented display of the AR glasses.

A head-wearable device comprising a larger battery, a smaller battery, one or more electronic components, and memory including executable instructions for causing the head-wearable device to perform operations is described. The operations are performed in response to a request to perform a computational task. The operations include, in accordance with a determination that a larger battery charge is above a larger battery charge threshold and a smaller battery charge is above a smaller battery charge threshold, providing power from the larger battery and the smaller battery to the one or more electronic components. The operations further include, in accordance with a determination that the larger battery charge is above the larger battery charge threshold and the smaller battery charge is below the smaller battery charge threshold: (i) deactivating a discharging path of the smaller battery and (ii) providing power from the larger battery to the one or more electronic components.

A method of automatically switching a head-wearable device from a display state to a displayless state in accordance with a determination that a display suppression condition is present is described. The method includes, while the head-wearable device is in a display state: (i) obtaining a first instruction, (ii) causing the head-wearable device to present a first response, based on the first instruction, at a display of the head-wearable device, and (iii) in accordance with a determination that a display suppression condition is present, causing the head-wearable device to enter a displayless state. The method further includes, while the head-wearable device is in the displayless state: (i) obtaining a second instruction, (ii) causing the head-wearable device to present a second response, based on the second instruction, at a speaker of the head-wearable device, and (iii) in response to a wake command, causing the head-wearable device to enter the display state.

Aspects of the present disclosure are directed to wrist- or forearm-locked virtual objects providing access to artificial reality (XR) system-level and/or application-level actions and/or functions. A virtual button (or multiple buttons) can appear at a particular location on a user's wrist, such as on the inside of the wrist when the wrist is rotated toward the user's face. The virtual button can be used to access a menu of available options, functions, or other actions with a single tap, or provide other controls with other tap types (e.g., multiple taps, long press, etc.). In some implementations, different buttons providing access to different functions can be placed on different wrists.

Systems and methods for interacting with an artificially intelligent agent at a wrist-wearable device are described. An example method includes detecting an invocation of an artificially intelligent agent, the invocation based on data associated with neuromuscular signals sensed by one or more biopotential sensors, causing capture of image data using one or more cameras included on a head-wearable device, the image data including a real-world object, providing the image data to the artificially intelligent agent, presenting, at a display of a wrist-wearable device: a representation of the real-world object and a dialogue message generated by the artificially intelligent agent, the dialogue message generated based on an object type of the real-world object and a selected set of pre-defined user-specific preferences associated with the object type of the real-world object.